This is a very good feature and we need it. The nice proposal, thx Jan Li.
On Mon, Nov 16, 2020 at 4:40 PM Ming Wen <[email protected]> wrote: > agreed. > We need a health check for redis, just like upstream health check. > > Thanks, > Ming Wen, Apache APISIX PMC Chair > Twitter: _WenMing > > > Jan Li <[email protected]> 于2020年11月16日周一 下午3:50写道： > > > Hi community, > > > > Currently APISIX uses Redis to do cluster-level rate limit, it > calls > > Redis for every request to check whether the rate control is broken. > > > > Problem is that Redis becomes an important dependency in the > critical > > path of request processing. So if Redis is under maintenance, every > request > > will have to wait for the Redis connection to timeout. The timeout will > > slow down request processing of APISIX and might cause other issues due > to > > request processing are actually pending. > > > > Proposal: > > > > 1. Start a backend process to check the availability of Redis. > > 2. If Redis is unavailable, all operations on Redis will fail fast. > > 3. If Redis is back to normal, all operations on Redis will hit Redis > > again. > > 4. The check health interval can be configured in config.yaml. > > > -- *MembPhis* My GitHub: https://github.com/membphis Apache APISIX: https://github.com/apache/apisix
